Tunç Orhan, Yazıcı Alper, Aytaç İsmail, Tümüklü Koray, Akşamoğlu Melih
Gaziantep University, Gaziantep, Turkey.
Sanko University, Gaziantep, Turkey.
Allergy Rhinol (Providence). 2021 Aug 23;12:21526567211032560. doi: 10.1177/21526567211032560. eCollection 2021 Jan-Dec.
Radiologic findings of fungal sinus disease are generally opacification in paranasal computed tomography (CT) images. The Hounsfield unit (HU) is a standardized objective unit that is also suitable for measuring remodeling and opacifications on CT scans of bone sections of patients with chronic rhinosinusitis. We hypothesized that HU values could provide valuable information in isolated sphenoid sinus lesions before surgery. Between 2012 and 2019, 35 patients underwent functional endoscopic sinus surgery for sphenoid sinus lesions. Tissues obtained from the sphenoid sinus were divided into two groups, fungal and nonfungal, according to the findings of histopathologic examinations. HU values were measured in sphenoid sinus sections on paranasal CT scans of these two groups. Differences in mean and maximum HU values between the two groups were statistically significant (<.05). The maximum HU values calculated from the sphenoid sinus were 435.08 and 196.23 (≤.05) in the fungal group and nonfungal group, respectively. The mean HU values calculated from the sphenoid sinus were 64.31 and 29 (≤.05) in the fungal and nonfungal groups, respectively. At the maximum cutoff value of 241, the sensitivity and specificity of the HU maximum were 84.6% and 77.3%, respectively. At the mean cutoff value of 41.5, the sensitivity and specificity of the HU mean were 76.9% and 86.4%, respectively. HU is an objective value used in radiographic density measurement. The HU values were higher in fungal lesions than in nonfungal inflammations, and they are useful in preoperative measurement.
真菌性鼻窦疾病的放射学表现通常是鼻窦计算机断层扫描（CT）图像中的混浊。亨氏单位（HU）是一个标准化的客观单位，也适用于测量慢性鼻窦炎患者骨切片CT扫描上的骨质重塑和混浊情况。我们假设HU值可以在术前为孤立性蝶窦病变提供有价值的信息。2012年至2019年期间，35例患者因蝶窦病变接受了功能性鼻内镜鼻窦手术。根据组织病理学检查结果，将从蝶窦获取的组织分为真菌性和非真菌性两组。在这两组患者的鼻窦CT扫描的蝶窦切片中测量HU值。两组之间平均和最大HU值的差异具有统计学意义（<.05）。真菌组和非真菌组蝶窦计算出的最大HU值分别为435.08和196. .23（≤.05）。真菌组和非真菌组蝶窦计算出的平均HU值分别为64.31和29（≤.05）。在最大临界值为241时，HU最大值的敏感性和特异性分别为84.6%和77.3%。在平均临界值为41.5时，HU平均值的敏感性和特异性分别为76.9%和86.4%。HU是用于放射密度测量的客观值。真菌性病变中的HU值高于非真菌性炎症，并且它们在术前测量中很有用。
